The original metal version of Bernhard Gothic contained various alternate glyphs such as this single-story ‘a’, ‘r’ with curled ear, and narrow zig-zag ‘s’. The only digital version I know with these alts (as well as the standard glyphs) is from Spiece Graphics. The lengthened extenders on ‘l’ and ‘p’ may be customized, but many geometric typefaces of this era (e.g. Atlas, Nobel, Ramsès/Apollo, Stymie) offered such alternates.